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Biometric and personal security engineer Foteini Agrafioti raises concerns about today's passwords and IDs, and shares how your body may provide easier, and more accurate, forms of identification.
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From September 10-12, 2014, TEDMED brought together Delegates in two host cities - Washington, DC and San Francisco, CA- from across the globe for an epic TEDMED gathering. These Delegates simultaneously participated in a unified, digitally-linked program with equal numbers of live Speakers, Delegates, and innovative Hive startups.

The full stage program from both cities was simulcast via TEDMED Live Streaming to over 130 countries. TEDMED Live is available for free to thousands of medical organizations, academic institutions, teaching hospitals, non-profit organizations, government facilities worldwide.

Join us by viewing the various speaker talks from TEDMED 2014 as the community unlocks the power of imagination in the hopes of building a healthier, more vibrant world.

Join us for the Great Challenges Program live broadcasts as a way to further explore the Great Challenges of health and medicine. Future events can be found at: plus.google.com/+TEDMED and you can follow the daily conversation on #GreatChallenges.